1 files changed, 65 insertions, 0 deletions
diff --git a/cmd/mist/assets/ext/ethereum.js/lib/jsonrpc.js b/cmd/mist/assets/ext/ethereum.js/lib/jsonrpc.js
new file mode 100644
index 000000000..b2d6922c0
--- /dev/null
+++ b/cmd/mist/assets/ext/ethereum.js/lib/jsonrpc.js
@@ -0,0 +1,65 @@
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file jsonrpc.js
+ * @authors:
+ *   Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+var messageId = 1;
+
+/// Should be called to valid json create payload object
+/// @param method of jsonrpc call, required
+/// @param params, an array of method params, optional
+/// @returns valid jsonrpc payload object
+var toPayload = function (method, params) {
+    if (!method)
+        console.error('jsonrpc method should be specified!');
+
+    return {
+        jsonrpc: '2.0',
+        method: method,
+        params: params || [],
+        id: messageId++
+    }; 
+};
+
+/// Should be called to check if jsonrpc response is valid
+/// @returns true if response is valid, otherwise false 
+var isValidResponse = function (response) {
+    return !!response &&
+        !response.error &&
+        response.jsonrpc === '2.0' &&
+        typeof response.id === 'number' &&
+        response.result !== undefined; // only undefined is not valid json object
+};
+
+/// Should be called to create batch payload object
+/// @param messages, an array of objects with method (required) and params (optional) fields
+var toBatchPayload = function (messages) {
+    return messages.map(function (message) {
+        return toPayload(message.method, message.params);
+    }); 
+};
+
+module.exports = {
+    toPayload: toPayload,
+    isValidResponse: isValidResponse,
+    toBatchPayload: toBatchPayload
+};
+
+